Turntable



W H-.- KRUG.

TURNTABLE. APPLICATION nuep NOV-12,1921.

Patented Mar. 7, 1922.

WILLIAM KRUG, OF FUND DU TlAC, WISCONSIN.

TURNTABLE.

Specification of Letters Patent.

Patented Mar. '7, 1922.

Application filed November 12, 1921. Serial No. 514,488.

My invention relates. to improvements in turn tables, and is particularly concerned with the provision of a turntable of novel design to be used in garages and other places where a more or less large number of motor vehicles are housed, or where it is desired to turn such a vehicle within a small area.

The objects of my invention are,

First, to provide a turntable of the character described which is comparatively light in construction, and" mounted upon anti-- friction bearings or rollers so as to make it easily operable;

Second, to provide a turntable having a rotatably mounted annular platform surrounding a stationary platform, the surface of which is substantially flush withthe surface of the annular platform, so that oil dripping from the engine crank case, transmission, etc., will drop upon the central stationary platform. and drain into a pit in place of draining off the turntable over the movable portion;

hird, to provide a turntable requiring a minimum amount of excavation in the floor surface;

Fourth, to provide a turntablecomprising a pair of concentric, spaced, circular tracks for supporting the platform, each of said tracks being in turn supported by a series of rollers which are adjustably mounted beneath the track so that they may be adjusted to compensate for any irregularity or eccentricity of the track, and

Finally, to provide a turntable which is simple in construction and economical to manufacture.

Other objects will appear as this description progresses, reference being had to the accompanying drawings, in which- Figure 1 is a plan View of my improved turntable, portions of the platform thereof being broken away;

Figure 2 is a central vertical section taken on line :2-2 of Figure 1;

Figure 3 is a sectional detail view taken on line 3-3 of Figure 1;

Figure dis a plan View of the anti-frie tion roller which i employ for supporting the track of the platform and its supporting means; V

Figure 5 is a side elevation of the construction shown in Figure 4-, and

Figure 6 is a vertical section taken on line 6-6 of Figure 5.

Throughout the several views, similar reference characters are used for referring to similar parts, and the sections are taken looking-in the direction of the small arrows.

Referring to the drawings, my improved turntable comprises a pair of concentric, spaced, circular tracks 10 and llformed of angle iron, one flange of which extends in a horizontal plane, and the other in a vertical. plane. These tracks are joined and se cured together by the radially extending channel bars 12, the flanges of which are cut away adjacent the ends, as shown at 13, to permit the web 14 to lie fiat upon the horizontal flanges of the tracks. Rivets 15, or any other suitable means, may be used for securing the ends of the channel bars to the tracks;

For forming the platform, I employ a plurality of truncated, sector-shaped steel plates 16, the edges of which rest upon adjacent channel bars 12 in abutting relation to each other so that taken together they form anannular platform having the open h1g1? at the center thereof. ,These plates can be secured to the channel bars by means of rivets 18, or in any other desired way.

For supporting the tracks 10 and 11, I provide a series of rollers 20 for each of the tracks, these rollers being arranged ina circle of substantially the'same diameter as the track. For supporting each roller 20, I provide a frame comprising a plate 21 having a rectangular opening therein for receiving the roller. Flanges 22 depend from each side of the plate 21 to prevent the access of concrete to the roller when it is imbedded in the concrete. A pin 23, upon which theroller is rotatably mounted, finds bearings for its opposite ends in the flanges 22, as shown in Figure (3. 7

It is practically impossible to bend angle iron into perfectly true circles, and there 1s a possibility that in assembling the two tracks and the platform and plates, the two tracks will not be exactly concentric and 1t is, therefore, necessary to provide means to compensate for these irregularities. For this purpose I provide a bed plate compr1sing the two side members 24: and 25 and the two end members 26 and 27, all of which are spaced apart to provide a rectangular opening 28 which is considerably wlder than the distance l1 etween the outer faces of the two flanges 22. The end members 26 and 27 are provided with grooves 29 for receiving heads of the bolts 30, the grooves at the outer end being of suchsize as to freely permit the entry of the bolt heads thereinto, but toward their inner ends having overhanging flanges 81 against which "the heads of the bolts are clamped when the nuts 32 are tightened. It is, of course, to be understood from inspection of Figures 4, 5 and 6 that the bolts 30 extend through suitable openings in the plate 21 so that when, the nuts 32 are tight ened, this plate is securely clamped to the bed plate. For the purpose of preventing any shifting of the plate 21 relatively to its bed plate, the contacting surfaces of these two members are provided with corrugations 33 which form interlocking tongues and grooves that positively prevent shifting of the plate 21 and the bed plate when the nuts 32 are tightened. V

I prefer to mountmy improved turntable in an annular groove or trough 85 formed in the floor, thus leaving a central stationary portion 36 projecting upwardly, and having its surface substantially flush with the surface of the movable platform. Preferably, the edges of the supporting surfaces adjacent the platform are 're enforced by the concentric angle ironrings37 and 38. p

' In making use of my improved turntable, the vehicle is rolled upon it until, as shown in. Figure 2, the front wheels rest on one side of the annnlarplatiorm and the rear wheels upon the other side so that the vehicle spans the stationary portion 36. Any .oil, .water i or other liquid dripping from the central portion of the vehicle will fall upon the'stationary portion 36 and drain into the pit orv trough a 5, thereby preventing the accumula' tion of liquid upon the moving platform and keeping it substantially dry.- Itwill also be seen that by providing an annular platform,

it can be made lighter than the platforms in which thecentral portion forms a part of the. revolving platform.

While I have described the details of the construction of the preferred embodiment of my invention, it is to be understood that my invention is not limited to these details l but is capable of modifications within the scope of the appended claims.

Having thus described my invention, what I claim is:

1. An automobile turntable comprising two concentric, spaced, circular angle iron tracks, each having one flange disposed in a horizontal plane and the other flange disposed in a vertical plane, radially extending channel bars connecting said circular tracks, the flanges of said channel bars being cut away at each end to permit the web thereof to contact with the horizontal flanges of the adjacent track, truncated, sectorshaped, metallic plates having their edges resting upon adjacent channel bars in abutting relation to form an annular platform, means for supporting the vertical flange of each of said tracks comprising a series of rollers, each rotatably mounted in a frame, a support for each of said roller frames having an opening through which said roller projects, said frame being adjustable relatively to said support in the direction of the axis of said roller, and a stationary platform within said annular platform and substan tially flush therewith.

2. An automobile turntable comprising two concentric, spaced, circular tracks, radially extending channel bars connecting said circular tracks the flanges of said channel bars being cut away at each end to permit the web thereof to contact with the horizontal flanges o-fthe adj acent'track, truncated,

sector-shaped, metallic plates having their edges resting upon'adjacent channel bars in abutting relation to form an annular platfo1'm,'means for supporting each of said tracks comprising a series of rollers, each rotatably mounted in a frame, a support for each of said roller frames having an opening through which said roller projects, said frame being adjustable relatively to said support in the direction of the axis of said 'ro'llerfand a stationary platform within bars being cut away at each end to permit the web thereof to contact with the'horizontal flanges of the adjacent track, truncated, sector-shaped, metallic plates having their edges resting upon adjacent channel bars in abutting relation to form an annular platform, means for supporting each of said tracks comprising a series of rollers, each rotatably mounted in a frame, and astationary platform within said annular platform and substantially flush. therewith.

l. An automobile turntable comprising two concentric, spaced, circular tracks, channel bars connecting said circular tracks, truncated, sector-shaped, metallic plates having their edges resting upon adjacent channel bars in abutting relation to form an annular platform, means for supporting each of said tracks comprising a series of roll ers each rotatably mounted in a frame, and a stationary platform within said annular platform and substantially flush therewith.

An automobile turntable comprising two concentric, spaced, circular tracks, channel bars connecting said circular tracks, plates having their edges resting upon adjacent channel bars to form an annular platform, means for supporting each of said tracks comprising a series of rollers, each rotatably mounted in a frame, and a stationary platform within said annular platform and substantially flush therewith.

6. An automobile turntable comprising two concentric, spaced, circular tracks, an annular platform carried by said tracks, a series of rollers for supporting each of said tracks, and a stationary platform having a surface substantially fiush with the surface of said annular platform.

7. A turntable comprising a platform, a circular track for supporting aid platform, a series of rollers for supporting said track, and a support for each of said rollers, said rollers being adjustably mounted on said support so as to be adjustable in the direction of the axes of said rollers.

In witness whereof, I hereunto subscribe my name this 9th day of November, 1921.

WILLIAM H. KRUG.

Witnesses Orrro H. KAUFMON, HENRY B. Osooon. 

